background:url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层() A: 2、png B: 1、jpg C: 3、png D: 4、jpg
background:url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层() A: 2、png B: 1、jpg C: 3、png D: 4、jpg
在南瓜中果实的白色(W)对黄色(ω)是显性,盘状果实(D)对球状果实(d)是显性,且这两对基因是独立的,则Wωdd×ωωDd产生的后代基因型及比例为______。 A: 1/4WωDD、2/4WωDd、1/4Wωdd B: 1/4WWDD、1/4ωωdd、1/4WWDd、1/4ωωDd C: 1/2Wωdd、1/2WωDd D: 1/4WωDd、1/4Wωdd、1/4ωωDd、1/4ωωdd
在南瓜中果实的白色(W)对黄色(ω)是显性,盘状果实(D)对球状果实(d)是显性,且这两对基因是独立的,则Wωdd×ωωDd产生的后代基因型及比例为______。 A: 1/4WωDD、2/4WωDd、1/4Wωdd B: 1/4WWDD、1/4ωωdd、1/4WWDd、1/4ωωDd C: 1/2Wωdd、1/2WωDd D: 1/4WωDd、1/4Wωdd、1/4ωωDd、1/4ωωdd
下列表达式的结果正确的是()。 int aa,bb,cc,dd; aa=bb=cc=dd=1;sp; aa=bb=cc=dd=1;sp; aa=bb=cc=dd=1; (aa+1==2)?bb=aa+2:aa+3 A: 2 B: 3 C: 1 D: 5
下列表达式的结果正确的是()。 int aa,bb,cc,dd; aa=bb=cc=dd=1;sp; aa=bb=cc=dd=1;sp; aa=bb=cc=dd=1; (aa+1==2)?bb=aa+2:aa+3 A: 2 B: 3 C: 1 D: 5
已有字典DD = {'aa':{'bb':1,'cc':5},'bb':2,'cc':3},下列选项中能够输出5的是______() A: print(DD ['cc']) B: print(DD['aa']['cc']) C: print(DD['aa'][5]) D: print(DD['aa'][1])
已有字典DD = {'aa':{'bb':1,'cc':5},'bb':2,'cc':3},下列选项中能够输出5的是______() A: print(DD ['cc']) B: print(DD['aa']['cc']) C: print(DD['aa'][5]) D: print(DD['aa'][1])
background: url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层()。
background: url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层()。
DAT1DWDUP(1)DAT2DB16,25,42DAT3DD?CNTEQU$-DAT1求CNT
DAT1DWDUP(1)DAT2DB16,25,42DAT3DD?CNTEQU$-DAT1求CNT
两电阻相并联,已知R1 / R2 =1/2,则流入电阻上的电流之比 I1 /I2 、功率之比P1 / P2 分别是()。aa//bb//cc//dd// A: I1/I2=1/2, P1/ P2=1/2 B: I1/ I2=1/2, P1/ P2=1/4 C: I1/I2=2, P1/ P2=2 D: I1/ I2=2, P1/ P2=4
两电阻相并联,已知R1 / R2 =1/2,则流入电阻上的电流之比 I1 /I2 、功率之比P1 / P2 分别是()。aa//bb//cc//dd// A: I1/I2=1/2, P1/ P2=1/2 B: I1/ I2=1/2, P1/ P2=1/4 C: I1/I2=2, P1/ P2=2 D: I1/ I2=2, P1/ P2=4
下列杂交或自交实验中,子一代能出现性状分离的是() A: DD×dd B: dd×dd C: DD×DD D: Dd×Dd
下列杂交或自交实验中,子一代能出现性状分离的是() A: DD×dd B: dd×dd C: DD×DD D: Dd×Dd
父亲的基因型是DD,母亲的基因型是dd,子代的基因型是() A: DD B: Dd C: dd D: DD或dd
父亲的基因型是DD,母亲的基因型是dd,子代的基因型是() A: DD B: Dd C: dd D: DD或dd
<img src="data:image/png;base64,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" />=( ) A: (atan(x^(1/2))+C B: (atan(x)^2+C C: (atan(x^(1/2))^2+C D: (atan(x^2)^(1/2)+C
<img src="data:image/png;base64,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" />=( ) A: (atan(x^(1/2))+C B: (atan(x)^2+C C: (atan(x^(1/2))^2+C D: (atan(x^2)^(1/2)+C